I brought a rental house and had HRV installed before the tenant moved in as my daughter raved on about its benefits. The tenant was a single mum of two 8 year olds and has always rented and she said the house was the warmest and driest she's ever lived in. It saved her heaps in electricity bills as she hardly every turned on the heater and the kids ran around the house in bare feet most of winter! She was amazed and will always look for a HRV home with rentals and I know she will always be spouting the benefits of it from now on. Eight months later, my daughter and her family had to move from Auckland and so they moved into this rental property. They came from a rental home with HRV as my grandson has severe asthma. They had to move from this house as the landlord was moving back into it. With his asthma, they cannot even consider going into a damp, cold, home - even a little bit and Auckland property was getting unaffordable so the fear they would have to downgrade to an unhealthy home was becoming more real. So everything has worked out really well for us all and most importantly, for my grandson, his younger brother and the granddaughter due in early May. When looking at heating and upgrading the insulation, both those consultants were huge supporters of HRV and said it would more than likely be too hot at times in that house! At the least though, it's going to be so much more economical for the family to keep warm in winter and there doesn't have to be any installing of expensive heat pumps or heating as they are just utilising what's there (along with the insulation upgrade). That is also very cost effective for me too as this is an investment property and the HRV costs have well and truly been worth it and paid for itself really. So much so that I hope to have my other rental up north that my mother lives in, installed with an HRV for this winter as well because she is finding she feels the cold more and is very much in the 'pensioner mentality' of being frugal and not using the heater much even though she's cold because of the costs. She believes I need to install a heat pump to help as she heard from friends it's good but I know the HRV is the better choice and you rarely need both . She will then be able to use the heater when required but will find it so much easier to heat anyway and retain it because of how the HRV works. I can't wait for her to benefit from that and I just have to get my finances in order first and then I'll get that underway. As you can see, I am a very happy supporter and user of HRV - I can't speak highly enough of this system. I do all I can to refer friends and family onto it as there's such a lot of misunderstanding about home heating and first and foremost, your home needs to be dry and a HRV is the way to go. Thanks very much. Kind regards, Vicki Lee.